131013421242 has 32 divisors (see below), whose sum is σ = 285860703744. Its totient is φ = 39699198000.

The previous prime is 131013421181. The next prime is 131013421243. The reversal of 131013421242 is 242124310131.

It is not an unprimeable number, because it can be changed into a prime (131013421243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2258323 + ... + 2315609.

It is an arithmetic number, because the mean of its divisors is an integer number (8933146992).

Almost surely, 2^131013421242 is an apocalyptic number.

131013421242 is an abundant number, since it is smaller than the sum of its proper divisors (154847282502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131013421242 is a wasteful number, since it uses less digits than its factorization.

131013421242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91954.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 131013421242 its reverse (242124310131), we get a palindrome (373137731373).

Subtracting 131013421242 from its reverse (242124310131), we obtain a square (111110888889 = 333333²).

It can be divided in two parts, 131013 and 421242, that added together give a palindrome (552255).

The spelling of 131013421242 in words is "one hundred thirty-one billion, thirteen million, four hundred twenty-one thousand, two hundred forty-two".